BMW DIESEL FUELLING PROTECTION SYSTEM

Intelligent technology prevents far-reaching consequences of mis-fuelling
BMW is the first car manufacturer to equip all new diesel-powered models with an Diesel Fuelling Protection
System as standard equipment. The innovative system helps prevent cases of misfuelling at the pump and its
far-reaching consequences. A special mechanism fitted to the filler neck prevents drivers from accidentally
inserting the fuel filler nozzle of a standard unleaded petrol pump into the filler neck of a diesel-powered car. This
technology has been tried-and-tested in a variety of BMW models with diesel engines and is fitted to all dieselpowered
BMW models from Model Year 2009, including the 320d, 520d, X3 xDrive20d, X5 xDrive30d and the
730Ld now on sale in the Malaysia, right from the factory.

Every year, the German Automobile Association has to provide technical support in more than 5,000 cases of
diesel misfuelling. Rectifying the consequences of incorrect fuelling is not just time consuming, it may also
involve major costs. Even if the driver realizes their mistake before starting the engine, emptying and cleaning the fuel tank, pipes and the pump as well as changing the filter will be unavoidable.
The high number of cases of misfuelling shows that just a short moment of inattention suffices to select thewrong fuel filler nozzle at the filling station. Particularly drivers who frequently use different cars from rental
companies or company fleets often have to pay extra attention – more so, since the performance profile and
acoustic insulation measures of modern diesel engines reduce the differences between diesel and petrolpowered
engines to a minimum. The difference in fuel filler nozzle diameter often prevents accidentally filling
petrol engines with their narrower filler neck with diesel fuel, but during hasty filling manoeuvres, the filler nozzle
for unleaded petrol can easily and mistakenly be inserted into the filler neck of standard diesel models.
However BMW will help drivers to avoid making this costly mistake. The Diesel Fuelling Protection System fitted
to all BMW diesel-powered models is designed to allow only filler nozzles for diesel fuel to enter the filler neck.
The filler neck of these models is fitted with a locking system that can only be released by a standardized diesel
filler nozzle. An unleaded petrol nozzle with its smaller diameter cannot make the same connection and its
access is blocked.